SECURE TRANSMISSION OF AES-GCM ENCRYPTED TEXTS FOR WIRELESS COMMUNICATION VIA QR CODE AND SSTV INTEGRATION.

Abstract

The invention relates to a communication method for securely transmitting text-based data over radio (VHF / UHF) based wireless communication systems. In this invention, text data is encrypted using the AES-256-GCM algorithm, the resulting encrypted data is converted into a QR code using QR Code Model 2 and error correction level (ECC-H), and this QR code is converted to audio frequencies using SSTV (Slow-Scan Television) technology and transmitted over existing radio infrastructure. At the receiver, the SSTV signal is decrypted, the QR code is read, and the resulting encrypted data is decrypted using the AES-256-GCM algorithm to recover the original text. The invention reduces the need for additional modems or digital data channels due to its compatibility with existing radio infrastructure, and enables end-to-end secure transmission of text data at low bandwidth while maintaining confidentiality and integrity.